WO2017210993A1

WO2017210993A1 - Drive method and drive apparatus for liquid crystal panel

Info

Publication number: WO2017210993A1
Application number: PCT/CN2016/094377
Authority: WO
Inventors: 熊志
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2016-06-07
Filing date: 2016-08-10
Publication date: 2017-12-14
Also published as: CN105869596A; US20180182325A1

Abstract

A drive method and drive apparatus for a liquid crystal panel. The drive method comprises: A) determining a current reversal drive mode of a liquid crystal panel (S100); B) performing a pre-determined operation on gray-scale values of all pixels of a picture to be displayed on the liquid crystal panel according to the determined current reversal drive mode (S200); and C) when a result value of the pre-determined operation is greater than a pre-determined value, changing the current reversal drive mode (S300). The problem of flickering occurring when the liquid crystal panel statically displays a picture can be solved.

Description

Driving method and driving device of liquid crystal panel

Technical field

The invention belongs to the technical field of liquid crystal displays, and more particularly to a driving method and a driving device for a liquid crystal panel.

Background technique

Due to the characteristics of the liquid crystal molecules themselves, when a simple DC voltage is used to drive the liquid crystal molecules in the liquid crystal display (LCD) to deflect, it is easy to induce a polar electric field in the polarized molecules in the liquid crystal material, resulting in a constant DC bias. , which causes the picture to remain. For this phenomenon, the industry usually uses an inversion driving method of positive and negative polarity reversal to improve. However, when a liquid crystal panel is driven by a fixed inversion driving method, the liquid crystal panel may have a problem that the brightness is always changed to cause flicker when statically displaying certain screens.

As shown in FIG. 1, a schematic diagram of flicker generated when a screen is displayed in a column inversion driving manner is shown. For ease of understanding, the displayed picture has only two gray values, 0 and 127, respectively, and the odd column pixels display 127 gray levels, and the even column pixels display 0 gray levels. Further, the column inversion driving method performs polarity inversion in units of columns between the Nth frame and the N+3th frame. In the Nth frame, the driving voltages of the pixels of 127 gradations are all positive, and the driving voltages of the pixels of 0 gradations are all negative. In the N+1th frame, the driving voltages of the pixels of 127 gradations are all In the negative polarity, the driving voltages of the pixels of the 0 gradation are all positive, and thus the display is performed in the N+2th frame and the N+3th frame. Taking a pixel of 127 gradation as an example, since the average value of the positive and negative polarity driving voltages of the pixels of 127 gradations cannot be completely matched with VCOM (reference voltage), the pixels of 127 gradations are driven at positive or negative polarity. The absolute value of the voltage difference with VCOM does not match, so that the brightness of the pixels of the same gradation is inconsistent with the positive and negative driving voltages. Similarly, the luminance of the pixels of 0 gradation at the positive and negative driving voltages is also inconsistent. That is, when the screen is displayed, switching from the Nth frame to the N+1th frame, the N+1th frame to the N+2th frame, the N+2th frame switching to the N+3th frame, and the like are always switched. The brightness of the pixels of each gradation is changing during the process, so that the human eye feels the flicker of the displayed picture.

As shown in FIG. 2, a schematic diagram of flicker generated when a screen is displayed in a two-line inversion driving manner is shown. The displayed picture also has only two gray values, which are 0 and 127 respectively, and is a set of two behaviors. The odd column pixels in the odd array display 127 gray scales, and the even column pixels in the even array display 0 gray scales. . In addition, the two-line inversion driving method is between the Nth frame and the N+3, and each column is inverted in polarity in two rows. In the Nth frame, the driving voltages of the pixels of 127 gradations are all positive, and the driving voltages of the pixels of 0 gradations are all negative. In the N+1th frame, the driving voltages of the pixels of 127 gradations are all In the negative polarity, the driving voltages of the pixels of the 0 gradation are all positive, and thus the display is performed in the N+2th frame and the N+3th frame. At this time, for the above reason, when the screen is displayed, switching from the Nth frame to the N+1th frame, the N+1th frame to the N+2th frame, and the N+2th frame switching to the N+3th frame. The brightness of the pixels of each gradation changes during the process of switching, and the human eye also feels the flicker of the displayed picture.

Summary of the invention

In order to overcome the deficiencies of the prior art, an exemplary embodiment of the present invention provides a driving method and a driving device of a liquid crystal panel capable of improving a flicker problem when a liquid crystal panel displays a screen statically.

According to an aspect of the exemplary embodiments of the present invention, there is provided a driving method of a liquid crystal panel, wherein the driving method includes: A) determining a current inversion driving mode of the liquid crystal panel; B) driving according to the determined current inversion driving In a manner, a predetermined operation is performed on the grayscale values of all pixels of the picture to be displayed of the liquid crystal panel; C) when the result value of the predetermined operation is greater than a predetermined value, the current inversion driving mode is changed.

Optionally, in step B): calculating a sum of gray values of all pixels of the first polarity of the to-be-displayed picture minus the to-be-displayed when the picture to be displayed is displayed in the current inversion driving manner The absolute value of the sum of the gray values of all the pixels of the second polarity of the screen is displayed.

Optionally, when the current inversion driving mode is the column inversion driving mode, in step B): calculating a sum of gray values of all pixels of the to-be-displayed picture in the odd column minus the to-be-displayed picture The absolute value of the sum of the gray values of all pixels in the even column.

Optionally, when the current inversion driving mode is the two-line inversion driving mode, the step B) includes: pressing the gray values of all the pixels of the to-be-displayed picture from top to bottom by two behaviors Groups do not repeat grouping; calculate gray values of all pixels in odd columns in odd columns in the group a sum of the absolute values of the sum of the gray values of all the pixels in the even column in the even array in the group, wherein the bottom of all the pixels of the picture to be displayed is odd One line becomes a group.

Optionally, in step C): if the current inversion driving mode is the column inversion driving mode, when the result value of the predetermined operation is greater than a predetermined value, the current inversion driving mode is changed to two rows inversion. The driving mode; or, if the current inversion driving mode is the two-line inversion driving mode, when the result value of the predetermined operation is greater than a predetermined value, the current inversion driving mode is changed to the column inversion driving mode.

According to another aspect of the exemplary embodiments of the present invention, there is provided a driving device for a liquid crystal panel, wherein the driving device includes: a driving mode determining unit for determining a current reverse driving mode of the liquid crystal panel; and an operation unit for Performing a predetermined operation on the gray value of all pixels of the picture to be displayed of the liquid crystal panel according to the current inversion driving mode determined by the driving mode determining unit; and driving the mode changing unit for when the result value of the predetermined operation is greater than a predetermined value When the value is changed, the current inversion driving mode is changed.

Optionally, the operation unit calculates a sum of gray values of all pixels of the first polarity of the to-be-displayed picture minus the to-be-displayed when the to-be-displayed picture is displayed in the current inversion driving manner The absolute value of the sum of the gray values of all pixels of the second polarity of the picture.

Optionally, when the current inversion driving mode is the column inversion driving mode, the operation unit calculates a sum of gray values of all pixels of the to-be-displayed picture in the odd column minus the to-be-displayed picture. The absolute value of the sum of the gray values of all pixels in the even column.

Optionally, when the current inversion driving mode is the two-line inversion driving mode, the operation unit includes: a grouping sub-unit, configured to press the gray value of all pixels of the to-be-displayed picture from top to bottom a pair of upper and lower adjacent behaviors for non-repetitive grouping; an operation subunit for calculating a sum of gray values of all pixels in the odd column in the odd array in the group minus the even array in the group The absolute value of the sum of the gray values of all the pixels in the even column, wherein when the number of rows of all the pixels of the picture to be displayed is an odd number, the lowermost row becomes a group.

Optionally, if the current inversion driving mode is the column inversion driving mode, the driving mode changing unit changes the current inversion driving mode to two rows of inversion driving when the result value of the predetermined operation is greater than a predetermined value. Mode; or, if the current inversion driving mode is a two-line inversion driving mode, the driving mode The changing unit changes the current inversion driving mode to the column inversion driving mode when the result value of the predetermined operation is greater than a predetermined value.

According to the driving method and driving device of the liquid crystal panel of the exemplary embodiment of the present invention, it is possible to improve the flicker problem of the liquid crystal panel when the screen is displayed statically.

Additional aspects and/or advantages of the invention will be set forth in part in the description.

DRAWINGS

The above and/or other objects and advantages of the present invention will become more apparent from the following description of the embodiments of the invention.

1 is a schematic view showing flicker generated when a screen is displayed in a column inversion driving manner;

2 is a schematic view showing flicker generated when a screen is displayed in a two-line inversion driving manner;

FIG. 3 is a flowchart illustrating a driving method of a liquid crystal panel according to an exemplary embodiment of the present invention; FIG.

4 is a flowchart illustrating an arithmetic method of performing a predetermined operation when displaying a to-be-displayed picture in a two-line inversion driving manner, according to an exemplary embodiment of the present invention;

5 is a schematic view showing a change of the column inversion driving method to a two-line inversion driving method for FIG. 1;

6 is a schematic view showing a change of the two-row inversion driving mode to the column inversion driving mode for FIG. 2;

FIG. 7 is a block diagram showing a driving device of a liquid crystal panel according to an exemplary embodiment of the present invention; FIG.

FIG. 8 is a block diagram showing an arithmetic unit when a screen to be displayed is displayed in a two-line inversion driving manner, according to an exemplary embodiment of the present invention.

detailed description

Exemplary embodiments of the present invention will be described in detail, and examples of the embodiments are illustrated in the accompanying drawings, in which The embodiment will be described below by referring to the figures, In order to explain the present invention.

FIG. 3 is a flowchart illustrating a driving method of a liquid crystal panel according to an exemplary embodiment of the present invention.

As shown in FIG. 3, in step S100, the current inversion driving mode of the liquid crystal panel is determined. Here, the inversion driving method may be various existing inversion driving methods, and specifically, may include: a column inversion driving method, a row inversion driving method, a dot inversion driving method, a two-line inversion driving method, and two Column inversion driving method and frame inversion driving method.

It can be understood that the current inversion driving mode of the liquid crystal panel can be determined by various existing methods. For example, it can be determined by reading data of a set inversion driving mode stored at a predetermined position.

In step S200, according to the current inversion driving mode determined in step S100, a predetermined operation is performed on the grayscale values of all pixels of the picture to be displayed of the liquid crystal panel. Here, the operation method of the predetermined operation can be determined according to parameters and experiments of the liquid crystal panel.

Preferably, in step S200, calculating a sum of gray values of all pixels of the first polarity of the to-be-displayed picture minus the to-be-displayed picture when the picture to be displayed is displayed in the current inversion driving manner The absolute value of the sum of the gray values of all pixels of the second polarity. Here, the to-be-displayed screen refers to a screen that is displayed after the currently displayed screen and that is different from the currently displayed screen. The first polarity may be one of a positive electrode and a negative electrode, and the second polarity may be a polarity different from the first polarity in the positive electrode and the negative electrode. That is, when the to-be-displayed screen is displayed in the current inversion driving manner, a part of the pixels in the to-be-displayed picture are positive, and the other part of the pixels is a negative electrode. Here, the gray value of all the pixels of the positive or negative electrode is calculated. The sum is the absolute value of the sum of the gray values of all the pixels of the negative or positive electrode.

Next, a specific calculation method of step S200 will be described with a column inversion driving method and a two-line inversion driving method as preferred embodiments.

The column inversion driving method is as shown in FIG. 1, and the polarity is reversed in units of columns between the Nth frame and the N+3th frame.

In this way, when the to-be-displayed screen is displayed in the column inversion driving manner, in step S200, the sum of the grayscale values of all the pixels in the odd-numbered columns of the to-be-displayed screen is calculated minus the even number of the to-be-displayed screen. The absolute value of the sum of the gray values of all the pixels of the column. As shown in FIG. 1 , in the Nth frame, the first polarity is the positive polarity, the second polarity is the negative polarity, and in the N+1th frame, the Nth frame is opposite to the Nth frame, but the above The result of the calculation is unchanged. The same is true for other inversion driving methods, and will not be described again.

The two-line inversion driving method is as shown in FIG. 2. Between the Nth frame and the N+3, each column is inverted in polarity in two rows.

Thus, when the picture to be displayed is displayed in a two-line inversion driving manner, step S200 can perform a predetermined operation by the arithmetic method as shown in FIG.

4 is a flowchart illustrating an arithmetic method of performing a predetermined operation when a screen to be displayed is displayed in a two-line inversion driving manner, according to an exemplary embodiment of the present invention.

As shown in FIG. 4, in step S210, the gradation values of all the pixels of the to-be-displayed picture are grouped in a group of up and down from top to bottom.

In step S220, calculating a sum of gray values of all pixels located in the odd column in the odd array in the group, and subtracting the sum of the gray values of all pixels in the even column in the even array in the group. Absolute value.

Here, the above operation method is a case where the number of rows of all the pixels of the to-be-displayed picture is an even number, and when the number of rows of all the pixels of the to-be-displayed picture is an odd number, the lowermost line can be regarded as a group, thereby Perform a predetermined operation.

In the above, although the calculation method of step S200 has been described by the above two preferred embodiments, the calculation method of step S200 of the present invention is not limited thereto, and the first pole of the picture to be displayed can be calculated by step S200. Any method may be employed in which the sum of the gradation values of all the pixels of the sex minus the absolute value of the sum of the gradation values of all the pixels of the second polarity of the picture to be displayed.

For example, in the above two-line inversion driving method, it is exemplified that the gray value of all the pixels is not repeatedly grouped and then calculated, but the step of grouping is not an essential step, and may be omitted. Flexibly adjusting each step according to the inversion driving method, as long as the grayscale value of all the pixels of the first polarity of the to-be-displayed picture can be calculated minus the gray level of all the pixels of the second polarity of the to-be-displayed picture The absolute value of the sum of the values is sufficient.

In step S300, when the result value of the predetermined operation in step S200 is greater than the predetermined value, the current inversion driving mode is changed. Here, the predetermined value can be determined experimentally.

For example, in step S300, preferably, if the current inversion driving mode is the column inversion driving mode, when the result value of the predetermined operation is greater than a predetermined value, the current inversion driving mode may be changed to two rows. Inverting the driving mode, or if the current inversion driving mode is the two-line inversion driving mode, when the result value of the predetermined operation is greater than a predetermined value, the current inversion driving mode may be changed to the column inversion driving mode. the way.

FIG. 5 is a schematic view showing a change of the column inversion driving method to the two-line inversion driving method for FIG. 1. As shown in FIG. 5, the displayed picture does not change, and the column inversion driving mode is changed to the two-line inversion driving mode.

FIG. 6 is a schematic view showing a change of the two-row inversion driving method to the column inversion driving method for FIG. 2. FIG. As shown in FIG. 6, the displayed picture does not change, and the two-line inversion driving mode is changed to the column inversion driving mode.

It should be noted that the present invention is not limited to the case of only two gradation values shown in FIGS. 5 and 6, and may be various screens having a plurality of gradation values.

The problem of flicker when the liquid crystal panel is statically displayed on the screen is improved by changing the current inversion driving mode in step S300. Therefore, in step S300, the change of the inversion driving mode may be specific or random, preferably determined by an appropriate inversion driving mode of the picture to be displayed, that is, each static to-be-displayed picture has its The most suitable inversion driving method; therefore, the change in the embodiment is not limited to the switching between the column inversion driving mode and the two-row inversion driving mode, and is also applicable to the column inversion driving mode and the row inversion driving mode. Switching between the two inversion driving methods, the two-row inversion driving method, the two-column inversion driving method, the frame inversion driving method, and the like, and switching between the two inversion driving methods, and changing the inversion driving method The current inversion driving method is changed to a combination of any two or more of the above-described inversion driving methods. That is, as long as the result of the change can reduce the flickering problem of the liquid crystal panel when the screen is displayed statically.

According to the driving method of the liquid crystal panel of the exemplary embodiment of the present invention, regardless of the reverse driving mode of the liquid crystal panel, the current inversion driving mode can be dynamically changed by the driving method as described above to improve the static display of the liquid crystal panel. The flashing problem.

FIG. 7 is a block diagram showing a driving device of a liquid crystal panel according to an exemplary embodiment of the present invention.

As shown in FIG. 7, a driving device 10 of a liquid crystal panel according to an exemplary embodiment of the present invention includes a driving mode determining unit 100, an arithmetic unit 200, and a driving mode changing unit 300.

The driving mode determining unit 100 is configured to determine a current inversion driving mode of the liquid crystal panel. Here, the inversion driving method may be various existing inversion driving methods, and specifically, may include: a column inversion driving method, a row inversion driving method, a dot inversion driving method, a two-line inversion driving method, and two Column inversion driving method and frame inversion driving method.

It can be understood that the driving mode determining unit 100 can determine the current reverse driving mode of the liquid crystal panel by various existing methods. For example, the driving mode determining unit 100 can determine by reading the data of the set inversion driving mode stored at the predetermined position.

The operation unit 200 is configured to perform a predetermined operation on the gradation values of all pixels of the picture to be displayed of the liquid crystal panel according to the current inversion driving mode determined by the driving mode determining unit 100. Here, the operation method of the predetermined operation can be determined according to parameters and experiments of the liquid crystal panel.

Preferably, the operation unit 200 calculates a sum of gray values of all pixels of the first polarity of the to-be-displayed picture minus the picture to be displayed when the picture to be displayed is displayed in the current inversion driving manner. The absolute value of the sum of the gray values of all pixels of the second polarity. Here, the to-be-displayed screen refers to a screen that is displayed after the currently displayed screen and that is different from the currently displayed screen. The first polarity may be one of a positive electrode and a negative electrode, and the second polarity may be a polarity different from the first polarity in the positive electrode and the negative electrode. That is, when the picture to be displayed is displayed in the current inversion driving manner, a part of the pixels in the to-be-displayed picture are positive, and another part of the pixels is a negative electrode, and the computing unit 200 calculates the gray of all the pixels of the positive or negative electrode. The sum of the degrees is the absolute value of the sum of the gray values of all the pixels of the negative or positive electrode.

Next, a specific configuration of the arithmetic unit 200 will be described with a column inversion driving method and a two-line inversion driving method as preferred embodiments.

Specifically, when the picture to be displayed is displayed in a column inversion driving manner, the operation unit 200 calculates a sum of gray values of all pixels of the to-be-displayed picture in the odd column, and subtracts the even number of the picture to be displayed. The absolute value of the sum of the gray values of all the pixels of the column.

In addition, when the to-be-displayed screen is displayed in a two-line inversion driving manner, the frame of the arithmetic unit 200 The figure can be as shown in Figure 8.

As shown in FIG. 8, the operation unit 200 includes a grouping subunit 210 and an operation subunit 220.

The grouping sub-unit 210 is configured to perform non-repetitive grouping on the gray values of all the pixels of the picture to be displayed from top to bottom in a pair of upper and lower adjacent behaviors.

The operation subunit 220 is configured to calculate a sum of gray values of all pixels in the odd column in the odd array in the group, and subtract the gray values of all the pixels in the even column in the even array in the group. The absolute value of and.

Here, the grouping subunit 210 is a case where the number of rows of all the pixels of the to-be-displayed picture is even, and when the number of rows of all the pixels of the to-be-displayed picture is an odd number, the grouping subunit 210 may be the lowermost The row is treated as a group and then calculated by the operation sub-unit 220.

Although the configuration of the arithmetic unit 200 has been described above by the two preferred embodiments described above, the configuration of the arithmetic unit 200 of the present invention is not limited thereto, and the first unit to be displayed can be calculated by the arithmetic unit 200. Any combination of the gray value of all the pixels of the polarity minus the absolute value of the sum of the gray values of all the pixels of the second polarity of the picture to be displayed may be employed.

For example, in the above two-line inversion driving mode, the arithmetic unit 200 is illustrated as including the grouping subunit 210 and the operation subunit 220, but the grouping subunit 210 is not a necessary subunit, and may be omitted. The inversion driving method flexibly adjusts the configuration of the arithmetic unit 200 as long as the arithmetic unit 200 can calculate the sum of the gradation values of all the pixels of the first polarity of the picture to be displayed minus the second polarity of the picture to be displayed. The absolute value of the sum of the gray values of all the pixels is sufficient.

The driving mode changing unit 300 changes the current inversion driving mode when the result value of the predetermined operation in the arithmetic unit 200 is larger than a predetermined value. Here, the predetermined value can be determined experimentally.

For example, if the current inversion driving mode is the column inversion driving mode, the driving mode changing unit 300 may change the current inversion driving mode to two lines when the result value of the predetermined operation is greater than a predetermined value. Reverse drive mode, or if the current inversion drive mode is two-line reverse drive For example, the driving mode changing unit 300 may change the current inversion driving mode to the column inversion driving mode when the result value of the predetermined operation is greater than a predetermined value.

The driving mode changing unit 300 improves the flickering problem of the liquid crystal panel when the screen is displayed statically by changing the current inversion driving mode. Therefore, the change of the inversion driving mode by the driving mode changing unit 300 may be specific or random, preferably determined by an appropriate inversion driving mode of the picture to be displayed, that is, each static to-be-displayed picture has The most suitable inversion driving mode; therefore, the change in the embodiment is not limited to the switching between the column inversion driving mode and the two-row inversion driving mode, and is also applicable to the column inversion driving mode and the row inversion driving. Switching between any two inversion driving methods such as mode, dot inversion driving method, two-row inversion driving method, two-column inversion driving method, and frame inversion driving method, and also when changing the inversion driving method The current inversion driving method can be changed to a combination of any two or more of the above-described inversion driving methods. That is, as long as the result of the change can reduce the flickering problem of the liquid crystal panel when the screen is displayed statically.

According to the driving device of the liquid crystal panel of the exemplary embodiment of the present invention, regardless of the reverse driving mode of the liquid crystal panel, the current inversion driving mode can be dynamically changed by the driving device as described above to improve the static display of the liquid crystal panel. The flashing problem.

Furthermore, the above-described driving method according to an exemplary embodiment of the present invention may be implemented as computer code in a computer readable recording medium. The computer code can be implemented by those skilled in the art in accordance with the description of the above driving method. The above-described driving method of the present invention is implemented when the computer code is executed in a computer.

Further, each unit in the driving device of the liquid crystal panel according to an exemplary embodiment of the present invention may be implemented as a hardware component. Those skilled in the art can implement the various units using, for example, a Field Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC), depending on the processing performed by the various defined units.

The above embodiments of the present invention are merely exemplary, and the present invention is not limited thereto. It will be appreciated by those skilled in the art that the invention may be modified, and the scope of the invention is defined in the claims and equivalents thereof.

Claims

A driving method of a liquid crystal panel, wherein the driving method comprises:

A) determining the current reverse driving mode of the liquid crystal panel;

B) performing a predetermined operation on the gray value of all pixels of the picture to be displayed of the liquid crystal panel according to the determined current inversion driving manner;

C) When the result value of the predetermined operation is greater than a predetermined value, the current inversion driving mode is changed.
The driving method according to claim 1, wherein in step B):

Calculating, when displaying the to-be-displayed picture in the current inversion driving manner, summing the gray values of all pixels of the first polarity of the to-be-displayed picture minus all of the second polarity of the to-be-displayed picture The absolute value of the sum of the grayscale values of the pixels.
The driving method according to claim 2, wherein

When the current inversion driving mode is the column inversion driving mode, in step B): calculating a sum of gray values of all pixels of the to-be-displayed picture in the odd column minus the even column of the picture to be displayed The absolute value of the sum of the gray values of all pixels.
The driving method according to claim 2, wherein

When the current inversion driving mode is the two-line inversion driving mode, step B) includes:

And setting a gray value of all the pixels of the to-be-displayed picture from top to bottom in a group of two behaviors that are adjacent to each other;

Calculating an absolute value of a sum of gray values of all pixels located in the odd column in the odd array in the group, and subtracting a sum of gray values of all pixels in the even column in the even array in the group,

Wherein, when the number of rows of all the pixels of the to-be-displayed picture is an odd number, the bottom row becomes a group.
The driving method according to claim 1, wherein in step C):

If the current inversion driving mode is the column inversion driving mode, when the result value of the predetermined operation is greater than a predetermined value, the current inversion driving mode is changed to the two-line inversion driving mode;

Alternatively, if the current inversion driving method is the two-line inversion driving method, when the result value of the predetermined operation is greater than a predetermined value, the current inversion driving method is changed to the column inversion driving method.
A driving device for a liquid crystal panel, wherein the driving device comprises:

a driving mode determining unit, configured to determine a current reverse driving mode of the liquid crystal panel;

An operation unit, configured to perform a predetermined operation on a gray value of all pixels of a picture to be displayed of the liquid crystal panel according to a current inversion driving manner determined by the driving manner determining unit;

The driving mode changing unit is configured to change the current inversion driving mode when the result value of the predetermined operation is greater than a predetermined value.
The driving device according to claim 6, wherein the arithmetic unit calculates a gray value of all pixels of the first polarity of the to-be-displayed picture when the picture to be displayed is displayed in the current inversion driving manner And subtracting the absolute value of the sum of the gray values of all the pixels of the second polarity of the picture to be displayed.
The driving device according to claim 7, wherein

When the current inversion driving mode is the column inversion driving mode, the operation unit calculates a sum of gray values of all pixels of the to-be-displayed picture in the odd column minus the even columns of the to-be-displayed picture. The absolute value of the sum of the gray values of all pixels.
The driving device according to claim 7, wherein

When the current inversion driving mode is a two-line inversion driving mode, the operation unit includes:

a grouping subunit, configured to perform a non-repetitive grouping of gray values of all pixels of the picture to be displayed from top to bottom in a pair of upper and lower adjacent behaviors;

An operation subunit for calculating a sum of gray values of all pixels in the odd column in the odd array in the group, and subtracting gray values of all pixels in the even column in the even array in the group The absolute value of and

Wherein, when the number of rows of all the pixels of the to-be-displayed picture is an odd number, the bottom row becomes a group.
The driving device according to claim 6, wherein

If the current inversion driving mode is the column inversion driving mode, the driving mode changing unit changes the current inversion driving mode to the two-line inversion driving mode when the result value of the predetermined operation is greater than a predetermined value;

Alternatively, if the current inversion driving mode is the two-line inversion driving mode, the driving mode changing unit changes the current inversion driving mode to the column inversion driving mode when the result value of the predetermined operation is greater than a predetermined value.